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<div id="overview"><a href="../../../../../../../api/org/jboss/netty/example/http/file/HttpStaticFileServerHandler.html">View Javadoc</a></div><pre>

<a class="jxr_linenumber" name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a class="jxr_linenumber" name="2" href="#2">2</a>   <em class="jxr_comment"> * Copyright 2012 The Netty Project</em>
<a class="jxr_linenumber" name="3" href="#3">3</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="4" href="#4">4</a>   <em class="jxr_comment"> * The Netty Project licenses this file to you under the Apache License,</em>
<a class="jxr_linenumber" name="5" href="#5">5</a>   <em class="jxr_comment"> * version 2.0 (the "License"); you may not use this file except in compliance</em>
<a class="jxr_linenumber" name="6" href="#6">6</a>   <em class="jxr_comment"> * with the License. You may obtain a copy of the License at:</em>
<a class="jxr_linenumber" name="7" href="#7">7</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="8" href="#8">8</a>   <em class="jxr_comment"> *   <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a class="jxr_linenumber" name="9" href="#9">9</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="10" href="#10">10</a>  <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a class="jxr_linenumber" name="11" href="#11">11</a>  <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT</em>
<a class="jxr_linenumber" name="12" href="#12">12</a>  <em class="jxr_comment"> * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the</em>
<a class="jxr_linenumber" name="13" href="#13">13</a>  <em class="jxr_comment"> * License for the specific language governing permissions and limitations</em>
<a class="jxr_linenumber" name="14" href="#14">14</a>  <em class="jxr_comment"> * under the License.</em>
<a class="jxr_linenumber" name="15" href="#15">15</a>  <em class="jxr_comment"> */</em>
<a class="jxr_linenumber" name="16" href="#16">16</a>  <strong class="jxr_keyword">package</strong> org.jboss.netty.example.http.file;
<a class="jxr_linenumber" name="17" href="#17">17</a>  
<a class="jxr_linenumber" name="18" href="#18">18</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.buffer.ChannelBuffers;
<a class="jxr_linenumber" name="19" href="#19">19</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.Channel;
<a class="jxr_linenumber" name="20" href="#20">20</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelFuture;
<a class="jxr_linenumber" name="21" href="#21">21</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelFutureListener;
<a class="jxr_linenumber" name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelFutureProgressListener;
<a class="jxr_linenumber" name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelHandlerContext;
<a class="jxr_linenumber" name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.DefaultFileRegion;
<a class="jxr_linenumber" name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ExceptionEvent;
<a class="jxr_linenumber" name="26" href="#26">26</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.FileRegion;
<a class="jxr_linenumber" name="27" href="#27">27</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.MessageEvent;
<a class="jxr_linenumber" name="28" href="#28">28</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.SimpleChannelUpstreamHandler;
<a class="jxr_linenumber" name="29" href="#29">29</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.handler.codec.frame.TooLongFrameException;
<a class="jxr_linenumber" name="30" href="#30">30</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.handler.codec.http.DefaultHttpResponse;
<a class="jxr_linenumber" name="31" href="#31">31</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.handler.codec.http.HttpRequest;
<a class="jxr_linenumber" name="32" href="#32">32</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.handler.codec.http.HttpResponse;
<a class="jxr_linenumber" name="33" href="#33">33</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.handler.codec.http.HttpResponseStatus;
<a class="jxr_linenumber" name="34" href="#34">34</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.handler.ssl.SslHandler;
<a class="jxr_linenumber" name="35" href="#35">35</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.handler.stream.ChunkedFile;
<a class="jxr_linenumber" name="36" href="#36">36</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.util.CharsetUtil;
<a class="jxr_linenumber" name="37" href="#37">37</a>  
<a class="jxr_linenumber" name="38" href="#38">38</a>  <strong class="jxr_keyword">import</strong> javax.activation.MimetypesFileTypeMap;
<a class="jxr_linenumber" name="39" href="#39">39</a>  <strong class="jxr_keyword">import</strong> java.io.File;
<a class="jxr_linenumber" name="40" href="#40">40</a>  <strong class="jxr_keyword">import</strong> java.io.FileNotFoundException;
<a class="jxr_linenumber" name="41" href="#41">41</a>  <strong class="jxr_keyword">import</strong> java.io.RandomAccessFile;
<a class="jxr_linenumber" name="42" href="#42">42</a>  <strong class="jxr_keyword">import</strong> java.io.UnsupportedEncodingException;
<a class="jxr_linenumber" name="43" href="#43">43</a>  <strong class="jxr_keyword">import</strong> java.net.URLDecoder;
<a class="jxr_linenumber" name="44" href="#44">44</a>  <strong class="jxr_keyword">import</strong> java.text.SimpleDateFormat;
<a class="jxr_linenumber" name="45" href="#45">45</a>  <strong class="jxr_keyword">import</strong> java.util.Calendar;
<a class="jxr_linenumber" name="46" href="#46">46</a>  <strong class="jxr_keyword">import</strong> java.util.Date;
<a class="jxr_linenumber" name="47" href="#47">47</a>  <strong class="jxr_keyword">import</strong> java.util.GregorianCalendar;
<a class="jxr_linenumber" name="48" href="#48">48</a>  <strong class="jxr_keyword">import</strong> java.util.Locale;
<a class="jxr_linenumber" name="49" href="#49">49</a>  <strong class="jxr_keyword">import</strong> java.util.TimeZone;
<a class="jxr_linenumber" name="50" href="#50">50</a>  
<a class="jxr_linenumber" name="51" href="#51">51</a>  <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> org.jboss.netty.handler.codec.http.HttpHeaders.Names.*;
<a class="jxr_linenumber" name="52" href="#52">52</a>  <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> org.jboss.netty.handler.codec.http.HttpHeaders.*;
<a class="jxr_linenumber" name="53" href="#53">53</a>  <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> org.jboss.netty.handler.codec.http.HttpMethod.*;
<a class="jxr_linenumber" name="54" href="#54">54</a>  <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> org.jboss.netty.handler.codec.http.HttpResponseStatus.*;
<a class="jxr_linenumber" name="55" href="#55">55</a>  <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> org.jboss.netty.handler.codec.http.HttpVersion.*;
<a class="jxr_linenumber" name="56" href="#56">56</a>  
<a class="jxr_linenumber" name="57" href="#57">57</a>  <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="58" href="#58">58</a>  <em class="jxr_javadoccomment"> * A simple handler that serves incoming HTTP requests to send their respective</em>
<a class="jxr_linenumber" name="59" href="#59">59</a>  <em class="jxr_javadoccomment"> * HTTP responses.  It also implements {@code 'If-Modified-Since'} header to</em>
<a class="jxr_linenumber" name="60" href="#60">60</a>  <em class="jxr_javadoccomment"> * take advantage of browser cache, as described in</em>
<a class="jxr_linenumber" name="61" href="#61">61</a>  <em class="jxr_javadoccomment"> * &lt;a href="<a href="http://tools.ietf.org/html/rfc2616" target="alexandria_uri">http://tools.ietf.org/html/rfc2616</a>#section-14.25"&gt;RFC 2616&lt;/a&gt;.</em>
<a class="jxr_linenumber" name="62" href="#62">62</a>  <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="63" href="#63">63</a>  <em class="jxr_javadoccomment"> * &lt;h3&gt;How Browser Caching Works&lt;/h3&gt;</em>
<a class="jxr_linenumber" name="64" href="#64">64</a>  <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="65" href="#65">65</a>  <em class="jxr_javadoccomment"> * Web browser caching works with HTTP headers as illustrated by the following</em>
<a class="jxr_linenumber" name="66" href="#66">66</a>  <em class="jxr_javadoccomment"> * sample:</em>
<a class="jxr_linenumber" name="67" href="#67">67</a>  <em class="jxr_javadoccomment"> * &lt;ol&gt;</em>
<a class="jxr_linenumber" name="68" href="#68">68</a>  <em class="jxr_javadoccomment"> * &lt;li&gt;Request #1 returns the content of {@code /file1.txt}.&lt;/li&gt;</em>
<a class="jxr_linenumber" name="69" href="#69">69</a>  <em class="jxr_javadoccomment"> * &lt;li&gt;Contents of {@code /file1.txt} is cached by the browser.&lt;/li&gt;</em>
<a class="jxr_linenumber" name="70" href="#70">70</a>  <em class="jxr_javadoccomment"> * &lt;li&gt;Request #2 for {@code /file1.txt} does return the contents of the</em>
<a class="jxr_linenumber" name="71" href="#71">71</a>  <em class="jxr_javadoccomment"> *     file again. Rather, a 304 Not Modified is returned. This tells the</em>
<a class="jxr_linenumber" name="72" href="#72">72</a>  <em class="jxr_javadoccomment"> *     browser to use the contents stored in its cache.&lt;/li&gt;</em>
<a class="jxr_linenumber" name="73" href="#73">73</a>  <em class="jxr_javadoccomment"> * &lt;li&gt;The server knows the file has not been modified because the</em>
<a class="jxr_linenumber" name="74" href="#74">74</a>  <em class="jxr_javadoccomment"> *     {@code If-Modified-Since} date is the same as the file's last</em>
<a class="jxr_linenumber" name="75" href="#75">75</a>  <em class="jxr_javadoccomment"> *     modified date.&lt;/li&gt;</em>
<a class="jxr_linenumber" name="76" href="#76">76</a>  <em class="jxr_javadoccomment"> * &lt;/ol&gt;</em>
<a class="jxr_linenumber" name="77" href="#77">77</a>  <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="78" href="#78">78</a>  <em class="jxr_javadoccomment"> * &lt;pre&gt;</em>
<a class="jxr_linenumber" name="79" href="#79">79</a>  <em class="jxr_javadoccomment"> * Request #1 Headers</em>
<a class="jxr_linenumber" name="80" href="#80">80</a>  <em class="jxr_javadoccomment"> * ===================</em>
<a class="jxr_linenumber" name="81" href="#81">81</a>  <em class="jxr_javadoccomment"> * GET /file1.txt HTTP/1.1</em>
<a class="jxr_linenumber" name="82" href="#82">82</a>  <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="83" href="#83">83</a>  <em class="jxr_javadoccomment"> * Response #1 Headers</em>
<a class="jxr_linenumber" name="84" href="#84">84</a>  <em class="jxr_javadoccomment"> * ===================</em>
<a class="jxr_linenumber" name="85" href="#85">85</a>  <em class="jxr_javadoccomment"> * HTTP/1.1 200 OK</em>
<a class="jxr_linenumber" name="86" href="#86">86</a>  <em class="jxr_javadoccomment"> * Date:               Tue, 01 Mar 2011 22:44:26 GMT</em>
<a class="jxr_linenumber" name="87" href="#87">87</a>  <em class="jxr_javadoccomment"> * Last-Modified:      Wed, 30 Jun 2010 21:36:48 GMT</em>
<a class="jxr_linenumber" name="88" href="#88">88</a>  <em class="jxr_javadoccomment"> * Expires:            Tue, 01 Mar 2012 22:44:26 GMT</em>
<a class="jxr_linenumber" name="89" href="#89">89</a>  <em class="jxr_javadoccomment"> * Cache-Control:      private, max-age=31536000</em>
<a class="jxr_linenumber" name="90" href="#90">90</a>  <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="91" href="#91">91</a>  <em class="jxr_javadoccomment"> * Request #2 Headers</em>
<a class="jxr_linenumber" name="92" href="#92">92</a>  <em class="jxr_javadoccomment"> * ===================</em>
<a class="jxr_linenumber" name="93" href="#93">93</a>  <em class="jxr_javadoccomment"> * GET /file1.txt HTTP/1.1</em>
<a class="jxr_linenumber" name="94" href="#94">94</a>  <em class="jxr_javadoccomment"> * If-Modified-Since:  Wed, 30 Jun 2010 21:36:48 GMT</em>
<a class="jxr_linenumber" name="95" href="#95">95</a>  <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="96" href="#96">96</a>  <em class="jxr_javadoccomment"> * Response #2 Headers</em>
<a class="jxr_linenumber" name="97" href="#97">97</a>  <em class="jxr_javadoccomment"> * ===================</em>
<a class="jxr_linenumber" name="98" href="#98">98</a>  <em class="jxr_javadoccomment"> * HTTP/1.1 304 Not Modified</em>
<a class="jxr_linenumber" name="99" href="#99">99</a>  <em class="jxr_javadoccomment"> * Date:               Tue, 01 Mar 2011 22:44:28 GMT</em>
<a class="jxr_linenumber" name="100" href="#100">100</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="101" href="#101">101</a> <em class="jxr_javadoccomment"> * &lt;/pre&gt;</em>
<a class="jxr_linenumber" name="102" href="#102">102</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="103" href="#103">103</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/jboss/netty/example/http/file/HttpStaticFileServerHandler.html">HttpStaticFileServerHandler</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../../org/jboss/netty/channel/SimpleChannelUpstreamHandler.html">SimpleChannelUpstreamHandler</a> {
<a class="jxr_linenumber" name="104" href="#104">104</a> 
<a class="jxr_linenumber" name="105" href="#105">105</a>     <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String HTTP_DATE_FORMAT = <span class="jxr_string">"EEE, dd MMM yyyy HH:mm:ss zzz"</span>;
<a class="jxr_linenumber" name="106" href="#106">106</a>     <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String HTTP_DATE_GMT_TIMEZONE = <span class="jxr_string">"GMT"</span>;
<a class="jxr_linenumber" name="107" href="#107">107</a>     <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> HTTP_CACHE_SECONDS = 60;
<a class="jxr_linenumber" name="108" href="#108">108</a> 
<a class="jxr_linenumber" name="109" href="#109">109</a>     @Override
<a class="jxr_linenumber" name="110" href="#110">110</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> messageReceived(<a href="../../../../../../org/jboss/netty/channel/ChannelHandlerContext.html">ChannelHandlerContext</a> ctx, <a href="../../../../../../org/jboss/netty/channel/MessageEvent.html">MessageEvent</a> e) <strong class="jxr_keyword">throws</strong> Exception {
<a class="jxr_linenumber" name="111" href="#111">111</a>         <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpRequest.html">HttpRequest</a> request = (HttpRequest) e.getMessage();
<a class="jxr_linenumber" name="112" href="#112">112</a>         <strong class="jxr_keyword">if</strong> (request.getMethod() != GET) {
<a class="jxr_linenumber" name="113" href="#113">113</a>             sendError(ctx, METHOD_NOT_ALLOWED);
<a class="jxr_linenumber" name="114" href="#114">114</a>             <strong class="jxr_keyword">return</strong>;
<a class="jxr_linenumber" name="115" href="#115">115</a>         }
<a class="jxr_linenumber" name="116" href="#116">116</a> 
<a class="jxr_linenumber" name="117" href="#117">117</a>         <strong class="jxr_keyword">final</strong> String path = sanitizeUri(request.getUri());
<a class="jxr_linenumber" name="118" href="#118">118</a>         <strong class="jxr_keyword">if</strong> (path == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="119" href="#119">119</a>             sendError(ctx, FORBIDDEN);
<a class="jxr_linenumber" name="120" href="#120">120</a>             <strong class="jxr_keyword">return</strong>;
<a class="jxr_linenumber" name="121" href="#121">121</a>         }
<a class="jxr_linenumber" name="122" href="#122">122</a> 
<a class="jxr_linenumber" name="123" href="#123">123</a>         File file = <strong class="jxr_keyword">new</strong> File(path);
<a class="jxr_linenumber" name="124" href="#124">124</a>         <strong class="jxr_keyword">if</strong> (file.isHidden() || !file.exists()) {
<a class="jxr_linenumber" name="125" href="#125">125</a>             sendError(ctx, NOT_FOUND);
<a class="jxr_linenumber" name="126" href="#126">126</a>             <strong class="jxr_keyword">return</strong>;
<a class="jxr_linenumber" name="127" href="#127">127</a>         }
<a class="jxr_linenumber" name="128" href="#128">128</a>         <strong class="jxr_keyword">if</strong> (!file.isFile()) {
<a class="jxr_linenumber" name="129" href="#129">129</a>             sendError(ctx, FORBIDDEN);
<a class="jxr_linenumber" name="130" href="#130">130</a>             <strong class="jxr_keyword">return</strong>;
<a class="jxr_linenumber" name="131" href="#131">131</a>         }
<a class="jxr_linenumber" name="132" href="#132">132</a> 
<a class="jxr_linenumber" name="133" href="#133">133</a>         <em class="jxr_comment">// Cache Validation</em>
<a class="jxr_linenumber" name="134" href="#134">134</a>         String ifModifiedSince = request.headers().get(IF_MODIFIED_SINCE);
<a class="jxr_linenumber" name="135" href="#135">135</a>         <strong class="jxr_keyword">if</strong> (ifModifiedSince != <strong class="jxr_keyword">null</strong> &amp;&amp; ifModifiedSince.length() != 0) {
<a class="jxr_linenumber" name="136" href="#136">136</a>             SimpleDateFormat dateFormatter = <strong class="jxr_keyword">new</strong> SimpleDateFormat(HTTP_DATE_FORMAT, Locale.US);
<a class="jxr_linenumber" name="137" href="#137">137</a>             Date ifModifiedSinceDate = dateFormatter.parse(ifModifiedSince);
<a class="jxr_linenumber" name="138" href="#138">138</a> 
<a class="jxr_linenumber" name="139" href="#139">139</a>             <em class="jxr_comment">// Only compare up to the second because the datetime format we send to the client does</em>
<a class="jxr_linenumber" name="140" href="#140">140</a>             <em class="jxr_comment">// not have milliseconds</em>
<a class="jxr_linenumber" name="141" href="#141">141</a>             <strong class="jxr_keyword">long</strong> ifModifiedSinceDateSeconds = ifModifiedSinceDate.getTime() / 1000;
<a class="jxr_linenumber" name="142" href="#142">142</a>             <strong class="jxr_keyword">long</strong> fileLastModifiedSeconds = file.lastModified() / 1000;
<a class="jxr_linenumber" name="143" href="#143">143</a>             <strong class="jxr_keyword">if</strong> (ifModifiedSinceDateSeconds == fileLastModifiedSeconds) {
<a class="jxr_linenumber" name="144" href="#144">144</a>                 sendNotModified(ctx);
<a class="jxr_linenumber" name="145" href="#145">145</a>                 <strong class="jxr_keyword">return</strong>;
<a class="jxr_linenumber" name="146" href="#146">146</a>             }
<a class="jxr_linenumber" name="147" href="#147">147</a>         }
<a class="jxr_linenumber" name="148" href="#148">148</a> 
<a class="jxr_linenumber" name="149" href="#149">149</a>         RandomAccessFile raf;
<a class="jxr_linenumber" name="150" href="#150">150</a>         <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="151" href="#151">151</a>             raf = <strong class="jxr_keyword">new</strong> RandomAccessFile(file, <span class="jxr_string">"r"</span>);
<a class="jxr_linenumber" name="152" href="#152">152</a>         } <strong class="jxr_keyword">catch</strong> (FileNotFoundException fnfe) {
<a class="jxr_linenumber" name="153" href="#153">153</a>             sendError(ctx, NOT_FOUND);
<a class="jxr_linenumber" name="154" href="#154">154</a>             <strong class="jxr_keyword">return</strong>;
<a class="jxr_linenumber" name="155" href="#155">155</a>         }
<a class="jxr_linenumber" name="156" href="#156">156</a>         <strong class="jxr_keyword">long</strong> fileLength = raf.length();
<a class="jxr_linenumber" name="157" href="#157">157</a> 
<a class="jxr_linenumber" name="158" href="#158">158</a>         <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpResponse.html">HttpResponse</a> response = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/DefaultHttpResponse.html">DefaultHttpResponse</a>(HTTP_1_1, OK);
<a class="jxr_linenumber" name="159" href="#159">159</a>         setContentLength(response, fileLength);
<a class="jxr_linenumber" name="160" href="#160">160</a>         setContentTypeHeader(response, file);
<a class="jxr_linenumber" name="161" href="#161">161</a>         setDateAndCacheHeaders(response, file);
<a class="jxr_linenumber" name="162" href="#162">162</a> 
<a class="jxr_linenumber" name="163" href="#163">163</a>         <a href="../../../../../../org/jboss/netty/channel/Channel.html">Channel</a> ch = e.getChannel();
<a class="jxr_linenumber" name="164" href="#164">164</a> 
<a class="jxr_linenumber" name="165" href="#165">165</a>         <em class="jxr_comment">// Write the initial line and the header.</em>
<a class="jxr_linenumber" name="166" href="#166">166</a>         ch.write(response);
<a class="jxr_linenumber" name="167" href="#167">167</a> 
<a class="jxr_linenumber" name="168" href="#168">168</a>         <em class="jxr_comment">// Write the content.</em>
<a class="jxr_linenumber" name="169" href="#169">169</a>         <a href="../../../../../../org/jboss/netty/channel/ChannelFuture.html">ChannelFuture</a> writeFuture;
<a class="jxr_linenumber" name="170" href="#170">170</a>         <strong class="jxr_keyword">if</strong> (ch.getPipeline().get(SslHandler.<strong class="jxr_keyword">class</strong>) != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="171" href="#171">171</a>             <em class="jxr_comment">// Cannot use zero-copy with HTTPS.</em>
<a class="jxr_linenumber" name="172" href="#172">172</a>             writeFuture = ch.write(<strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/handler/stream/ChunkedFile.html">ChunkedFile</a>(raf, 0, fileLength, 8192));
<a class="jxr_linenumber" name="173" href="#173">173</a>         } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="174" href="#174">174</a>             <em class="jxr_comment">// No encryption - use zero-copy.</em>
<a class="jxr_linenumber" name="175" href="#175">175</a>             <strong class="jxr_keyword">final</strong> <a href="../../../../../../org/jboss/netty/channel/FileRegion.html">FileRegion</a> region =
<a class="jxr_linenumber" name="176" href="#176">176</a>                 <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/channel/DefaultFileRegion.html">DefaultFileRegion</a>(raf.getChannel(), 0, fileLength);
<a class="jxr_linenumber" name="177" href="#177">177</a>             writeFuture = ch.write(region);
<a class="jxr_linenumber" name="178" href="#178">178</a>             writeFuture.addListener(<strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/channel/ChannelFutureProgressListener.html">ChannelFutureProgressListener</a>() {
<a class="jxr_linenumber" name="179" href="#179">179</a>                 <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> operationComplete(<a href="../../../../../../org/jboss/netty/channel/ChannelFuture.html">ChannelFuture</a> future) {
<a class="jxr_linenumber" name="180" href="#180">180</a>                     region.releaseExternalResources();
<a class="jxr_linenumber" name="181" href="#181">181</a>                 }
<a class="jxr_linenumber" name="182" href="#182">182</a> 
<a class="jxr_linenumber" name="183" href="#183">183</a>                 <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> operationProgressed(
<a class="jxr_linenumber" name="184" href="#184">184</a>                         <a href="../../../../../../org/jboss/netty/channel/ChannelFuture.html">ChannelFuture</a> future, <strong class="jxr_keyword">long</strong> amount, <strong class="jxr_keyword">long</strong> current, <strong class="jxr_keyword">long</strong> total) {
<a class="jxr_linenumber" name="185" href="#185">185</a>                     System.err.printf(<span class="jxr_string">"%s: %d / %d (+%d)%n"</span>, path, current, total, amount);
<a class="jxr_linenumber" name="186" href="#186">186</a>                 }
<a class="jxr_linenumber" name="187" href="#187">187</a>             });
<a class="jxr_linenumber" name="188" href="#188">188</a>         }
<a class="jxr_linenumber" name="189" href="#189">189</a> 
<a class="jxr_linenumber" name="190" href="#190">190</a>         <em class="jxr_comment">// Decide whether to close the connection or not.</em>
<a class="jxr_linenumber" name="191" href="#191">191</a>         <strong class="jxr_keyword">if</strong> (!isKeepAlive(request)) {
<a class="jxr_linenumber" name="192" href="#192">192</a>             <em class="jxr_comment">// Close the connection when the whole content is written out.</em>
<a class="jxr_linenumber" name="193" href="#193">193</a>             writeFuture.addListener(ChannelFutureListener.CLOSE);
<a class="jxr_linenumber" name="194" href="#194">194</a>         }
<a class="jxr_linenumber" name="195" href="#195">195</a>     }
<a class="jxr_linenumber" name="196" href="#196">196</a> 
<a class="jxr_linenumber" name="197" href="#197">197</a>     @Override
<a class="jxr_linenumber" name="198" href="#198">198</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> exceptionCaught(<a href="../../../../../../org/jboss/netty/channel/ChannelHandlerContext.html">ChannelHandlerContext</a> ctx, <a href="../../../../../../org/jboss/netty/channel/ExceptionEvent.html">ExceptionEvent</a> e) {
<a class="jxr_linenumber" name="199" href="#199">199</a>         <a href="../../../../../../org/jboss/netty/channel/Channel.html">Channel</a> ch = e.getChannel();
<a class="jxr_linenumber" name="200" href="#200">200</a>         Throwable cause = e.getCause();
<a class="jxr_linenumber" name="201" href="#201">201</a>         <strong class="jxr_keyword">if</strong> (cause instanceof TooLongFrameException) {
<a class="jxr_linenumber" name="202" href="#202">202</a>             sendError(ctx, BAD_REQUEST);
<a class="jxr_linenumber" name="203" href="#203">203</a>             <strong class="jxr_keyword">return</strong>;
<a class="jxr_linenumber" name="204" href="#204">204</a>         }
<a class="jxr_linenumber" name="205" href="#205">205</a> 
<a class="jxr_linenumber" name="206" href="#206">206</a>         cause.printStackTrace();
<a class="jxr_linenumber" name="207" href="#207">207</a>         <strong class="jxr_keyword">if</strong> (ch.isConnected()) {
<a class="jxr_linenumber" name="208" href="#208">208</a>             sendError(ctx, INTERNAL_SERVER_ERROR);
<a class="jxr_linenumber" name="209" href="#209">209</a>         }
<a class="jxr_linenumber" name="210" href="#210">210</a>     }
<a class="jxr_linenumber" name="211" href="#211">211</a> 
<a class="jxr_linenumber" name="212" href="#212">212</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> String sanitizeUri(String uri) {
<a class="jxr_linenumber" name="213" href="#213">213</a>         <em class="jxr_comment">// Decode the path.</em>
<a class="jxr_linenumber" name="214" href="#214">214</a>         <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="215" href="#215">215</a>             uri = URLDecoder.decode(uri, <span class="jxr_string">"UTF-8"</span>);
<a class="jxr_linenumber" name="216" href="#216">216</a>         } <strong class="jxr_keyword">catch</strong> (UnsupportedEncodingException e) {
<a class="jxr_linenumber" name="217" href="#217">217</a>             <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="218" href="#218">218</a>                 uri = URLDecoder.decode(uri, <span class="jxr_string">"ISO-8859-1"</span>);
<a class="jxr_linenumber" name="219" href="#219">219</a>             } <strong class="jxr_keyword">catch</strong> (UnsupportedEncodingException e1) {
<a class="jxr_linenumber" name="220" href="#220">220</a>                 <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> Error();
<a class="jxr_linenumber" name="221" href="#221">221</a>             }
<a class="jxr_linenumber" name="222" href="#222">222</a>         }
<a class="jxr_linenumber" name="223" href="#223">223</a> 
<a class="jxr_linenumber" name="224" href="#224">224</a>         <em class="jxr_comment">// Convert file separators.</em>
<a class="jxr_linenumber" name="225" href="#225">225</a>         uri = uri.replace('/', File.separatorChar);
<a class="jxr_linenumber" name="226" href="#226">226</a> 
<a class="jxr_linenumber" name="227" href="#227">227</a>         <em class="jxr_comment">// Simplistic dumb security check.</em>
<a class="jxr_linenumber" name="228" href="#228">228</a>         <em class="jxr_comment">// You will have to do something serious in the production environment.</em>
<a class="jxr_linenumber" name="229" href="#229">229</a>         <strong class="jxr_keyword">if</strong> (uri.contains(File.separator + '.') ||
<a class="jxr_linenumber" name="230" href="#230">230</a>             uri.contains('.' + File.separator) ||
<a class="jxr_linenumber" name="231" href="#231">231</a>             uri.startsWith(<span class="jxr_string">"."</span>) || uri.endsWith(<span class="jxr_string">"."</span>)) {
<a class="jxr_linenumber" name="232" href="#232">232</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="233" href="#233">233</a>         }
<a class="jxr_linenumber" name="234" href="#234">234</a> 
<a class="jxr_linenumber" name="235" href="#235">235</a>         <em class="jxr_comment">// Convert to absolute path.</em>
<a class="jxr_linenumber" name="236" href="#236">236</a>         <strong class="jxr_keyword">return</strong> System.getProperty(<span class="jxr_string">"user.dir"</span>) + File.separator + uri;
<a class="jxr_linenumber" name="237" href="#237">237</a>     }
<a class="jxr_linenumber" name="238" href="#238">238</a> 
<a class="jxr_linenumber" name="239" href="#239">239</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> sendError(<a href="../../../../../../org/jboss/netty/channel/ChannelHandlerContext.html">ChannelHandlerContext</a> ctx, <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpResponseStatus.html">HttpResponseStatus</a> status) {
<a class="jxr_linenumber" name="240" href="#240">240</a>         <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpResponse.html">HttpResponse</a> response = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/DefaultHttpResponse.html">DefaultHttpResponse</a>(HTTP_1_1, status);
<a class="jxr_linenumber" name="241" href="#241">241</a>         response.headers().set(CONTENT_TYPE, <span class="jxr_string">"text/plain; charset=UTF-8"</span>);
<a class="jxr_linenumber" name="242" href="#242">242</a>         response.setContent(ChannelBuffers.copiedBuffer(<span class="jxr_string">"Failure: "</span> + status + <span class="jxr_string">"\r\n"</span>, CharsetUtil.UTF_8));
<a class="jxr_linenumber" name="243" href="#243">243</a> 
<a class="jxr_linenumber" name="244" href="#244">244</a>         <em class="jxr_comment">// Close the connection as soon as the error message is sent.</em>
<a class="jxr_linenumber" name="245" href="#245">245</a>         ctx.getChannel().write(response).addListener(ChannelFutureListener.CLOSE);
<a class="jxr_linenumber" name="246" href="#246">246</a>     }
<a class="jxr_linenumber" name="247" href="#247">247</a> 
<a class="jxr_linenumber" name="248" href="#248">248</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="249" href="#249">249</a> <em class="jxr_javadoccomment">     * When file timestamp is the same as what the browser is sending up, send a "304 Not Modified"</em>
<a class="jxr_linenumber" name="250" href="#250">250</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="251" href="#251">251</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> sendNotModified(<a href="../../../../../../org/jboss/netty/channel/ChannelHandlerContext.html">ChannelHandlerContext</a> ctx) {
<a class="jxr_linenumber" name="252" href="#252">252</a>         <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpResponse.html">HttpResponse</a> response = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/DefaultHttpResponse.html">DefaultHttpResponse</a>(HTTP_1_1, NOT_MODIFIED);
<a class="jxr_linenumber" name="253" href="#253">253</a>         setDateHeader(response);
<a class="jxr_linenumber" name="254" href="#254">254</a> 
<a class="jxr_linenumber" name="255" href="#255">255</a>         <em class="jxr_comment">// Close the connection as soon as the error message is sent.</em>
<a class="jxr_linenumber" name="256" href="#256">256</a>         ctx.getChannel().write(response).addListener(ChannelFutureListener.CLOSE);
<a class="jxr_linenumber" name="257" href="#257">257</a>     }
<a class="jxr_linenumber" name="258" href="#258">258</a> 
<a class="jxr_linenumber" name="259" href="#259">259</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="260" href="#260">260</a> <em class="jxr_javadoccomment">     * Sets the Date header for the HTTP response</em>
<a class="jxr_linenumber" name="261" href="#261">261</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="262" href="#262">262</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> setDateHeader(<a href="../../../../../../org/jboss/netty/handler/codec/http/HttpResponse.html">HttpResponse</a> response) {
<a class="jxr_linenumber" name="263" href="#263">263</a>         SimpleDateFormat dateFormatter = <strong class="jxr_keyword">new</strong> SimpleDateFormat(HTTP_DATE_FORMAT, Locale.US);
<a class="jxr_linenumber" name="264" href="#264">264</a>         dateFormatter.setTimeZone(TimeZone.getTimeZone(HTTP_DATE_GMT_TIMEZONE));
<a class="jxr_linenumber" name="265" href="#265">265</a> 
<a class="jxr_linenumber" name="266" href="#266">266</a>         Calendar time = <strong class="jxr_keyword">new</strong> GregorianCalendar();
<a class="jxr_linenumber" name="267" href="#267">267</a>         response.headers().set(DATE, dateFormatter.format(time.getTime()));
<a class="jxr_linenumber" name="268" href="#268">268</a>     }
<a class="jxr_linenumber" name="269" href="#269">269</a> 
<a class="jxr_linenumber" name="270" href="#270">270</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="271" href="#271">271</a> <em class="jxr_javadoccomment">     * Sets the Date and Cache headers for the HTTP Response</em>
<a class="jxr_linenumber" name="272" href="#272">272</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="273" href="#273">273</a> <em class="jxr_javadoccomment">     * @param fileToCache the file to extract content type</em>
<a class="jxr_linenumber" name="274" href="#274">274</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="275" href="#275">275</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> setDateAndCacheHeaders(<a href="../../../../../../org/jboss/netty/handler/codec/http/HttpResponse.html">HttpResponse</a> response, File fileToCache) {
<a class="jxr_linenumber" name="276" href="#276">276</a>         SimpleDateFormat dateFormatter = <strong class="jxr_keyword">new</strong> SimpleDateFormat(HTTP_DATE_FORMAT, Locale.US);
<a class="jxr_linenumber" name="277" href="#277">277</a>         dateFormatter.setTimeZone(TimeZone.getTimeZone(HTTP_DATE_GMT_TIMEZONE));
<a class="jxr_linenumber" name="278" href="#278">278</a> 
<a class="jxr_linenumber" name="279" href="#279">279</a>         <em class="jxr_comment">// Date header</em>
<a class="jxr_linenumber" name="280" href="#280">280</a>         Calendar time = <strong class="jxr_keyword">new</strong> GregorianCalendar();
<a class="jxr_linenumber" name="281" href="#281">281</a>         response.headers().set(DATE, dateFormatter.format(time.getTime()));
<a class="jxr_linenumber" name="282" href="#282">282</a> 
<a class="jxr_linenumber" name="283" href="#283">283</a>         <em class="jxr_comment">// Add cache headers</em>
<a class="jxr_linenumber" name="284" href="#284">284</a>         time.add(Calendar.SECOND, HTTP_CACHE_SECONDS);
<a class="jxr_linenumber" name="285" href="#285">285</a>         response.headers().set(EXPIRES, dateFormatter.format(time.getTime()));
<a class="jxr_linenumber" name="286" href="#286">286</a>         response.headers().set(CACHE_CONTROL, <span class="jxr_string">"private, max-age="</span> + HTTP_CACHE_SECONDS);
<a class="jxr_linenumber" name="287" href="#287">287</a>         response.headers().set(LAST_MODIFIED, dateFormatter.format(<strong class="jxr_keyword">new</strong> Date(fileToCache.lastModified())));
<a class="jxr_linenumber" name="288" href="#288">288</a>     }
<a class="jxr_linenumber" name="289" href="#289">289</a> 
<a class="jxr_linenumber" name="290" href="#290">290</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="291" href="#291">291</a> <em class="jxr_javadoccomment">     * Sets the content type header for the HTTP Response</em>
<a class="jxr_linenumber" name="292" href="#292">292</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="293" href="#293">293</a> <em class="jxr_javadoccomment">     * @param file the file to extract content type</em>
<a class="jxr_linenumber" name="294" href="#294">294</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="295" href="#295">295</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> setContentTypeHeader(<a href="../../../../../../org/jboss/netty/handler/codec/http/HttpResponse.html">HttpResponse</a> response, File file) {
<a class="jxr_linenumber" name="296" href="#296">296</a>         MimetypesFileTypeMap mimeTypesMap = <strong class="jxr_keyword">new</strong> MimetypesFileTypeMap();
<a class="jxr_linenumber" name="297" href="#297">297</a>         response.headers().set(CONTENT_TYPE, mimeTypesMap.getContentType(file.getPath()));
<a class="jxr_linenumber" name="298" href="#298">298</a>     }
<a class="jxr_linenumber" name="299" href="#299">299</a> }
</pre>
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